air jacket

English

Alternative forms

• airjacket

Noun

air jacket (plural air jackets)

1. A lifejacket.
   • 1867, William Henry Smyth, The Sailor’s Word-Book‎^[1], London: Blackie & Son, page 28:

     AIR-JACKET. A leathern garment furnished with inflated bladders, to buoy the wearer up in the water.

   • 1985, Lawrence Durrell, chapter 1, in Quinx‎^[2], New York: Viking, page 29:

     She wore an inflatable air jacket stolen from Air France.

2. (equestrianism) An inflatable vest worn to cushion falls.
   • 1765, George Alexander Stevens, The Celebrated Lecture on Heads, London: R. Richards, Part 3, p. 16,^[3]

     […] our army all should wear a new uniform; all our horse infantry should wear air jackets, and all our foot cavalry should wear cork waistcoats; and then ye know why they’d be all over the sea before you could say Jack Robinson.

   • 2014, Lauren St John, The One Dollar Horse:

     Anna Sparks shrugged into her air jacket and slipped her bib over the top of it. There was a time when she'd have felt invincible in the lead-up to the cross-country, especially if she'd posted a personal best of 40.3 to lie third behind David Powell and Sam Tide after the dressage, but today nerves roared through her system like ocean waves, building and crashing.

   • 2017, Guy N. Rutty, Essentials of Autopsy Practice, page 94:

     If a competitor chooses to wear an inflatable air jacket during the cross country phase it must be placed over the top of a body protector, whereas in the other phases/other disciplines the air jacket can be worn without a body protector.

3. An enclosed space containing nothing but air that surrounds something in order to provide insulation.
   • 1906 November 7, E. Favary, “Air Cooling Devices”, in The Horseless Age: The Automobile Trade Magazine, volume 18, number 19:

     In the first Daimler gasoline engines a current of air was forced through an air jacket surrounding the cylinder by means of a rotary fan mounted on the crank shaft.

   • 1938, Benjamin Charles Gruenberg, Samuel P. Unzicker, Science in Our Lives, page 222:

     But instead of having an air jacket around the firebox or stove, it has many water pipes among the flames.

   • 2021, Wei-Hua Wang, Infertility and Assisted Reproduction, page 227:

     For example, if one patient was conducted two times of frozen–thawed embryo transfer (FET) (all embryos from the air jacket incubator) and was verified pregnant at last, the clinical pregnancy rate would be 50%.